lablgtk can't find cairo (was: Re: Problem with cairo)

[Ryan Schmidt]

On Feb 22, 2008, at 08:16, Angela Zhu wrote:

> Sorry I didn't make it clear.
> I want to use gSourceVIew library provided by lablgtk-2.10.0.
> I first tried to use "port install lablgtk2", while it seems to  
> succeed in installation,
> I cannot use gSourceVIew library because no "lablgtksourceview.cma"  
> and "gSourceView.cmi" can be find on my machine after installation.
> But these two files are needed to compile OCaml program using  
> gSourceVIew library.
>
> That's why I want to try install by hand after installing it using  
> MacPorts "successfully".

Ok. Another option might be to file an enhancement request ticket in  
our issue tracker and assign it to the maintainer of the lablgtk2  
port. Maybe this feature would be useful to have in the port.


> On Fri, Feb 22, 2008 at 2:43 AM, Ryan Schmidt wrote:
>
>> On Feb 21, 2008, at 16:30, Angela Zhu wrote:
>>
>> > So I try to download cairo and comple it, but after "cd  
>> cairo-1.4.14",
>> > when I was doing "./configure" (for cairo), I got following
>> > attached msg (2).
>> >
>> > And then a funny thing is that I actually should have cairo
>> > installed on my machine
>> > using "MacPorts", according to attached commands and msg (3).
>> >
>> > Anyone can help me to see what are is the problem here?
>> > Many thanks in advance!
>> >
>> > ------------------------------
>> > ------------
>> > (1) ./configure for lablgtk
>> > ------------------------------------------
>> > checking pkg-config is at least version 0.9.0... yes
>> > checking for BASE_DEPENDENCIES... configure: error: Package
>> > requirements (glib-2.0 >= 2.13.5    atk >= 1.9.0    pango >=
>> > 1.17.3    cairo >= 1.2.0) were not met:
>> >
>> > No package 'cairo' found
>> >
>> > Consider adjusting the PKG_CONFIG_PATH environment variable if you
>> > installed software in a non-standard prefix.
>> >
>> > Alternatively, you may set the environment variables
>> > BASE_DEPENDENCIES_CFLAGS
>> > and BASE_DEPENDENCIES_LIBS to avoid the need to call pkg-config.
>> > See the pkg-config man page for more details.
>> > ------------------------------------------
>>
>> If you're installing by hand: What's your PKG_CONFIG_PATH? Does it
>> include the place where cairo is installed?
>
> I did  "echo $PKG_CONFIG_PATH" but nothing found, how can I change  
> this parameter?
>
>
>> > ------------------------------------------
>> > (2)  ./configure for cairo
>> > ------------------------------------------
>> > checking whether cairo's Microsoft Windows font backend could be
>> > enabled... no (requires a Win32 platform)
>> > checking for cairo's PNG backend...
>> > configure: WARNING: Could not find libpng in the pkg-config search
>> > path
>> > checking whether cairo's PNG backend could be enabled... no
>> > configure: error: requested PNG backend could not be enabled
>> > ------------------------------------------
>>
>> Here too, the PKG_CONFIG_PATH would enable cairo to know where libpng
>> is.
>
> Again, I am confused, how could I set those parameters?

Simply set the environment variable in the terminal by typing:

export PKG_CONFIG_PATH=/opt/local/lib/pkgconfig

You may also need to set:

export CPPFLAGS=-I/opt/local/include

export LDFLAGS=-L/opt/local/lib